Well people make mistakes like that in real life as well (which I guess this is a real life mistake, but), it'd be pretty unrealistic if everything was perfect
Everyone makes mistakes. Copy and paste ones are common. Although recently it seems someone is doing it a lot more often than usually. Either way reporting it here, and sending a support case is the best way to get it fixed someday. My guess is, the more support cases, the faster it will be fixed.
Mistakes like this can be a good indicator of what they are working on i.e. neglecting simple things like this suggests they are in a mad rush to complete something with much higher priority
If missions/weapons are similar Crone would not expect a copy paste but more something like a mail merge. Crone has no clue what this would be called in a general term.